ROLE OF BIOCHAR IN AGROFORESTRY
Author(s):
R VIJAYKUMAR, MURALI M, Bodiga Divya
Keywords:
Biochar, Climate Mitigation, FYM, Coffee Agroforestry system.
Abstract
Huge Quantities of unused and excess crop and Agroforestry residues in India are becoming an issue of concern due to inefficient crop residue management practices. Annually 523Mt crop residues are generated in India, out of which 127Mt is surplus. These residues are either partially utilized or un-utilized due to various constraints. As per the latest report published by Global Biochar Market is estimated to reach $17,050 Thousand by 2024; growing at a CAGR of 16% from 2016-2024. Direct incorporation of residues into the soil can conserve soil nutrients and organic content but causes considerable crop management problems due to delay in decomposition. The word Biochar is Greek word Bio means Life and Char means Coal obtained through Carbonisation, Pre-Columbian Amazonians produced boichar by smoldering agricultural waste in pits or trenches. It is not known if they intentionally used biochar to enhance soil productivity. European settlers called it Terra preta indio, that contain variable Quantities of organic black carbon considered to be of anthrogenic origin. Biochar production and application to soil Amendment covering benefits beyond carbon sequestration. This includes improvement of soil physical properties that benefits for crops, improved retention capacity and availability of soil nutrients, improved biological activity and consequently higher yields and societal advantages through Mitigation of Global warming through Carbon Sequestration. A protocol was developed to produce biochar through low –cost CRIDA biocahr kiln at community level or at individual farmer’s level, to produce biochar from crop and Agroforestry residues. A recent study in mid-hills in the Himalaya Nepal showed that there were significant (P<0.05) positive effects on soil chemical properties, crop growth (height) and crop productivity due to effect of Biochar and FYM application on a degraded soils in a coffee Agroforestry system. For future studies the long-term impact of residual Biochar for soil amendment on crop yield improvement, nutrient availability carbon sequestration potential, and GHG’s Mitigation.
Article Details
Unique Paper ID: 152506

Publication Volume & Issue: Volume 8, Issue 4

Page(s): 347 - 357
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